[PATCH] D22045: [X86] Support of no_caller_saved_registers attribute (Clang part)

[Aaron Ballman via cfe-commits]

On Mon, Jul 25, 2016 at 11:15 AM, H.J Lu <hjl.tools at gmail.com> wrote:
> hjl.tools added a comment.
>
> no_caller_saved_registers attribute can be used with any calling conventions.

Okay, so is it expected that use of this attribute through a function
pointer is not going to produce the same results as calling the
function directly? e.g.,

void func(int, int, int, int) __attribute__((no_caller_saved_registers, cdecl));

int main() {
  void (*fp)(int, int, int, int) __attribute__((cdecl)) = func;
  func(1, 2, 3, 4);
  fp(1, 2, 3, 4); // Not the same as the above call to func()?
}

~Aaron

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> https://reviews.llvm.org/D22045
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